Reinforcing-bar for concrete-work.



E, o. WOODWARD. REINFORCING BAR FOR CONCRETE WORK.

APPLIOATION FILED JAN. Zfi, 1908 Patented Feb. 23, 1909,

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RALI'ILGH, XORTH CAROLINA.

REINFORCING-BAR FOR CONCRETE-WORK.

.No. 913,6o3.

Specification of Letters Patent.

Patented Feb. 23, 1909.

Application filed January 25, 1908. Serial No. &12,614.

To all who-m 'it may concern:

' caved portions Wooowxxto. a citizen of the I'nited `States of America, residing at Raleigh. in the county of lVake and State of North Carolina, have invented new and useful Improvements in Reinforcing' Barfor which the following is a specification.

Concrete W'ork, ot'

This invention relates to reinforcing bars i for concrete work, and one of the pricipal objects of the same is to provide a bar of l such contour from creepiug or becomin g detached from the bar under the efl ects of heat and cold.

Another object of the inveution is to proas will prevent the eoncrete vide a reinforcing har to be embedded within the coucrete and to become intimately united the'ewth and prevented from movement. by -rregularites m the bar.

These and other objects may be attained constructon illustratecl n by means of the the acconpan vng drawing, m whch,-

Figu'e 1 is a longitudinal section of a concrete post or sill and showing the reinforcing har in elevation enbedded therein. g

Fig. Q'is a vertical sectional view of the same. Fig. :l is an end view of the reinforcing bar. .Fg. 4 s a perspeetive view o the same detaehed from the concrete.

Referrng to the drawing' for a more speforcing bar is embedded.

l\ plurahty of cube shaped elements 2 are provided to form the har Q and are prefcfic description ot' n intention the numeral l desgnates a concrete post. sllt floor-ing or other concrete work wthu which the rem- I i vertically. substautially erabl arranged in pairs. each pair forming one section of the bar Qand as shown. one

element of each section is disposed at an angle with respect to its adjacent element. the alternate elements throughout the entire length of the bar being disposed at. a comnon angle, as clearly illustrated. The construction is such that a plurality of con- 3, anda plurality of convexed portions 4 are forned throughout the entire length of the said bar and upon all sichs thereof. and it may he mentioued that each section forms two concaved portions and an equal number of convexed portions. The comtruction is also such 215 presente sealloped faces upon all sides ot' the said har.

A bar such as has been described may be very readil v rolled into shape or otherwise produced at eomparatively slight cost.

From the 't'oregoing' it will be obvious that' a reint'orcing har made in acco'clance with my invention and embedded within concrete work will give extraordinay tensile strength and will also brace the work trausversely, while the cost of production is not greate' than ordinar b'aced or reintorced concrete work. v

Having thus described the inveution, what s claimed as new. is

l. A cross sectionally angular reinforcing bar so (listorted that each face comprises two alternating series of rectaugular su't'aces re- Ye'sely inclined both laterally and longitdinally of the bar. each corner of the bar -oupo'ed of straight lines zigzag both lougitudinally and verti -ally, substantially as shown and described.

:2. l\ Square reinforcing bar so distorted that each face comprises two alternatmg reres of rectaugnlar surfaces reversely nclined both lat'erallv and longitudinally ot' straight lines zigzag both longitdinallv and as shown and described.

In testimonv whereof I aflix n signature n presence of two witnesses.

l-llWAltl CLFFORD WOODWARD. lVitnesses H. R. Joxns, L. T. PENNY.

the har, each eorner of the bar composed of 

